GL820 Midi Data Logger

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The Graphtec GL820 is a compact, lightweight multi-channel Data Logger. The standard configuration has 20 isolated input channels and can be expanded in 20 channel increments up to a total of 200 channels.

The GL-820 features a high resolution 5.7" TFT color display and an easy to navigate menu system for in-field changes to set up parameters.

Data can be captured in a variety of ways. Save directly to the 2GB internal flash memory or to a hot swappable USB memory stick. You can also save directly to a network drive via Ethernet or to a PC via USB cable. The Web & FTP server functions built in to the GL820 allow for control and monitoring and data transfer from a remote location.

20 Isolated Input channels, expandable to 200
Sample Up To 10 times per second (100ms) Using 10 Channels or Less
Sample Up To 5 times per second (200ms) Using 11 Channels or More
Accepts voltage or thermocouple inputs and optional cable inputs for (4) pulse/Logic or (1) Humidity

GL820 Data Logger Specifications

Number of Channels	20 Analog Signal Input Channels (Expandable to 200 Channels using #B-537 and #B-538)
Input Channels	Types: Trigger (1 Channel), Logic/Pulse (4 Channels) Max. Input Voltage: 0 to 24 Volts (Single-Ended Ground) Input Threshold Voltage: Approx. +2.5 Volts Hysteresis: Approx. 0.5 Volts (+2.5 Volts to + 3 Volts) Method: Scans by the Photo-MOS-Relay, All Channels Isolated Terminal Type: Screw Terminal (M3 Screw)
Alarm Output	Number of Channels: 4 Output Format: Open Collector Output (5 Volts, 10 kΩ Pull-Up Resistance)
Storage Devices	Built-in Flash Memory (2 GB) USB Memory Device
Sampling Interval	Sampling Interval up to 1 Hour. The Fastest Sampling Rates and the Restrictions: 100ms (10 Times per Second): Up to 10 Channels at a Time 200ms (5 Times per Second): 11 or More Channels at a Time
Backup Functions	Setup Parameters: EEPROM Clock: Lithium Battery
Clock Accuracy	±0.002% (50 Seconds per Month) @ 23.0°C
Operating Environment	Temperature: 0 to 45°C Humidity: 5 to 85% RH (Non-condensing)
Power Source	AC Adapter: 100 to 240 Volts AC, 50/60 Hz (Included) DC Input: (8.5 to 24 VDC; Max. 26.4 Volts)* Battery Pack: 7.4 VDC (2200 mAh) Note:** * With Optional DC Drive Cable (Part # B-514) ** With Optional Battery Pack (Part #B-517). Up to 2 Batteries Can be Attached.
Measurement Ranges	Voltage: 20, 50, 100, 200, 500mV; 1, 2, 5, 10, 20, 50V; 1 to 5 Volts FS Thermocouple: Type K, J, E, T, R, S, B, N and W Supported RTD: PT100 (Spec IEC751), JPT100 (Spec JIS), PT1000 (Spec IEC751) Humidity: 0 to 100% (w/ Optional #B-530 Humidity Sensor)
Measurement Accuracy	Voltage: >> 0.1% Full Scale Type R Thermocouple: >> 0°C ≤ TS ≤ 100°C: ±5.2°C >> 100°C < TS ≤ 300°C: ±3.0°C >> 300°C < TS ≤ 1600°C: ±(0.05 % of Rdg + 2.0°C) Type S Thermocouple: >> 0°C ≤ TS ≤ 100°C: ±5.2°C >> 100°C < TS ≤ 300°C: ±3.0°C >> 300°C < TS ≤ 1760°C: ±(0.05 % of Rdg + 2.0°C) Type B Thermocouple: >> 400°C ≤ TS ≤ 600°C: ±3.5°C >> 600°C < TS ≤ 1820°C: ±(0.05% of Rdg + 2.0°C) Type K Thermocouple: >> -200°C ≤ TS ≤ -100°C: ±(0.05% of Rdg + 2.0°C) >> -100°C < TS ≤ 1370°C: ±(0.05% of Rdg + 1.0°C) Type E Thermocouple: >> -200°C ≤ TS ≤ -100°C: ±(0.05% of Rdg + 2.0°C) >> -100°C < TS ≤ 800°C: ±(0.05% of Rdg + 1.0°C) Type T Thermocouple: >> -200°C ≤ TS ≤ -100°C: ±(0.1% of Rdg + 1.5°C) >> -100°C < TS ≤ 400°C: ±(0.1% of Rdg + 0.5°C) Type J Thermocouple: >> -200°C ≤ TS ≤ -100°C: ±2.7°C) >> -100°C < TS ≤ 100°C: ±1.7°C) >> 100°C < TS ≤ 1100°C: ±(0.05% of Rdg + 1.0 °C) Type N Thermocouple: >> 0°C ≤ TS ≤ 1300°C: ±(0.1% of Rdg + 1.0°C) Type W Thermocouple: >> 0°C ≤ TS ≤ 2000°C: ±(0.1% of Rdg + 1.5°C) Reference Junction Compensation: ±0.5°C
Display	Size: 5.7" TFT Color LCD (VGA 320 x 240 pixels) Formats: Waveform + Digital Values, Waveform Only, Current and Captured Signal Waveform, Digital Values Only
A/D Converter	ΣΔ Type; 16 Bits (Effective Resolution: 1/40,000 of Full Range)
Data Saving Function	Captured Data: Direct Saving of Data into Flash Memory or USB Memory Device Others: Setting Conditions, Screen Copy
Ring Capturing Mode	Function: ON/OFF Number of Capturing Point: 1,000 to 2,000,000 (Size of the Capture Data Will Be Limited to 1/3 of Available Memory)
Temperature Coefficient	Gain: 0.01% of FS/°C Zero: 0.02% of FS/°C Note: Occurs When Sampling Speed is 10, 20 or 50 ms
Withstand Voltage	Between Input Terminal / Input Terminal: 350V p-p (1 Minute) Between Input Terminal / GND: 350 V p-p (1 Minute)
Maximum Input Voltage	Between ± Terminals: 60Vp-p Between Input Terminal / Input Terminal: 60V p-p Between Terminal / GND: 60Vp-p
Common Mode Rejection Ratio	At Least 90 dB (50/60 Hz; Signal Source 300Ω or Less
Noise	At Least 48 dB (with +/- Terminals Shorted)
OS Compatibility	Windows XP, Vista and 7 (32 and 64 Bit Editions)
Interface to PC	USB (Full Speed) Ethernet (LAN)
Dimensions	232mm x 152mm x 50mm
Weight	900g (Excluding AC Adapter and Battery)

	GL820 Midi Data Logger >> Accepts Voltage, Temp, Humidity, Pulse and Logic Inputs >> 20 Isolated Channels with 16-bit ADC resolution >> 2GB Internal Data Storage and External USB Memory Drive >> Includes Software, AC Adapter and User Manual	Part #: GL820
	Standard NIST DC Voltage Calibration Service >> 1 Point (per Channel) Offset Calibration >> Traceable to NIST >> Certificate Supplied >> Note: 3 to 5 Day Lead Time for All Calibration Orders	Part #: CAL-NIST-DCVOLT

Optional Sensors for GL820 Midi Logger

Graphtec Humidity Sensor

>> Temperature Range: -25°C to 80°C
>> Humidity Range: 0 to 100% RH
>> RH Accuracy: ±3% RH (5 to 98%RH at 25°C)
>> Response Time: 15 Seconds (90% Response Time When Membrane Filter Installed
>> Cable Length: 3 Meters

Part #: B-530

Welded Tip Teflon Thermocouple w/ 72" Bare Wire Leads

>> Operating Range: -75°C to 250°C
>> Leads: 72" Teflon Insulated Twisted Pair Bare Wire Leads
>> Available in Type J, K, T and N

Quantity	Price Each
1 - 9
10 - 25
26+

Welded Tip Teflon Thermocouple w/ 180" Bare Wire Leads

>> Operating Range: -75°C to 250°C
>> Leads: 180" Teflon Insulated Twisted Pair Bare Wire Leads
>> Available in Type J, K, T and N

Quantity	Price Each
1 - 9
10 - 25
26+

Optional Accessories for GL820 Midi Logger

	20-Channel Extension Terminal Set >> 20 Channel Terminal >> Extension Terminal Base Unit >> Connection Plate >> Screws	Part #: B-538
	Graphtec Extension Terminal Base Set >> Extension Terminal Base Unit >> Cable	Part #: B-537
	Logic Alarm Cable >> (4) Logic Inputs >> (4) Alarm Outputs >> Cable Length: 2 Meters	Part #: B-513
	DC Drive Cable >> 2 Meter Cable	Part #: B-514
	Graphtec Battery Pack >> Capacity: 7.2 Volts/ 2200 mAh >> Battery Type: Lithium Secondary Battery >> Running Time: 2.5 Hours to 9.0 Hours >> Charging Method: Mount in the Main Unit >> Charging Time: 4 to 8 Hours >> Operation Environment: 15°C to 40°C	Part #: B-517
	Replacement AC Adapter >> Compatible with GL220 and GL820	Part #: 682124530
	Yellow Xtreme Protective Case >> Yellow Waterproof, Crushproof Case >> Inside Dimension: 11.93" x 9.02" x 4.02" >> Outside Dimension: 12.81" x 10.36" x 4.64" >> Conforms to MIL-STD-810F Transit >> Includes Customizable Foam Inserts	Part #: T6000.2
	Black Xtreme Protective Case >> Black Waterproof, Crushproof Case >> Inside Dimension: 11.93" x 9.02" x 4.02" >> Outside Dimension: 12.81" x 10.36" x 4.64" >> Conforms to MIL-STD-810F Transit >> Includes Customizable Foam Inserts	Part #: T6000.3
	Cole Parmer 12" Length Cable Adapter, Type K	Part #: 93786-02